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Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

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Eutrophication

The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water.

Law of Conservation of Matter and Energy

The total amount of matter and energy available in the universe is fixed.

Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.

Three ways to make patina at home

The first way is ammonia patination. To do this, take a plastic container. Put a couple of paper or ordinary towels at the bottom. Moisten them with ammonia. Then sprinkle with large table salt.

Boiling Point

The temperature at which the vapor pressure of a liquid is equal to the applied pressure, also the condensation point

How to make crystal glass

From history we know that the idea of creating crystal belongs to the British: they were the first to add lead oxides to the charge material, and as a result got glass with unusual “voice”, transparency and sparkling faces. Classical crystal contains 24% of lead oxide, but there are products with a higher content of up to 30%.

Heterogeneous Mixture

A mixture that does not have uniform composition and properties throughout.

Chemical Change

A change in which one or more new substances are formed.

Boron Hydrides

Binary compounds of boron and hydrogen.